CVE-2021-43569

See a problem?
Please try reporting it to the source first.

Source

https://cve.org/CVERecord?id=CVE-2021-43569

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-43569.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2021-43569

Aliases

GHSA-j3jw-j2j8-2wv9

Published

2021-11-09T22:15:07.597Z

Modified

2026-04-10T04:40:52.061010Z

Severity

9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

[none]

Details

The verify function in the Stark Bank .NET ECDSA library (ecdsa-dotnet) 1.3.1 fails to check that the signature is non-zero, which allows attackers to forge signatures on arbitrary messages.

References

Affected packages

Git / github.com/starkbank/ecdsa-dotnet

Affected ranges

Type

GIT

Repo

https://github.com/starkbank/ecdsa-dotnet

Events

Introduced

Last affected

76b1faf93152c7b0614a2e90ffb2ef51b30606a2

Fixed

76b1faf93152c7b0614a2e90ffb2ef51b30606a2

Database specific

{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.3.2"
        }
    ]
}

Affected versions

v1.*

v1.0.0

v1.1.0

v1.2.0

v1.2.1

v1.3.0

v1.3.1

v1.3.2

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-43569.json"